Monat: Februar 2021

Raspberry Pico is out !! 4$, 2xI2S, 2xSPI etc../ Twister OS for Pi4

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hi there ;-),

found by chance that a new “Raspberry Pico !! ” is out/available..

Cost is about 4$, software is micro-phyton or C/C++, has USB1.1, Dualcore ARM cortex 133mhz, looks like an ESP32-alternative..

some more technical specs->

Mikrocontroller RP2040
• 2 MB QSPI Flash-Speicher,• 256 KB RAM,• 2x 20 I/O Pinleiste (30x GPIO-Pins 3,3V),• ADC 12-Bit 500ksps,• 2x UART / 2x I2C / 2x SPI / 16x PWM
• RTC / Timer mit 4 Alarmen,• Pinabstand: 2,54 mm
• Micro-USB 1.1 für Strom und Datenübertragung

u can get it for example here-> https://www.rasppishop.de/Raspberry-Pi-Pico-RP2040-ARM-Cortex-SBC

and here´s a tutorial how getting started->https://pico.raspberrypi.org/getting-started/

by that, i´ve “discovered” “TWISTER-OS !!“->absolutely super great (for RPI-4s)..

https://twisteros.com/

absolutely super nice + top usable, + absolutely sleeky look, it has tons of software pre-installed (Kodi,VLC-Player,Retro Pie,Steam-client etc..) and the great advantage is still the phenomenal sound (over USB to a xmos-bridge->I2S->ES9038Q2M) because of the short electronical circuits on the board (as mentioned in the article before), absolutely great and for the first time a real good OS for the Raspberry Pi-4 !! (its based on the normal Raspberry OS)

fantastic, give it a try !! 😉

another thing is that i´ve bought now a third pair of speaker (Mission 760i (not SE)) this time and will tell u then more very interesting facts on these Mission-lines (760,780)..wanted originally make a new subsite for it (/mission-speaker) for it..

by that a very interesting site is also this: https://www.hifiengine.com/

https://www.hifishark.com/ (link also in a widget on the right) is a very good adress for “used” hifi-gear (crawler), cause this is also a “hi-fi website” 😉 (or is intented to be 😉 )..

more to come “in this fashion”,

greets for now !! 😉

New speaker / little experience-report / Volumio at 2.861 / some new ES9038Pro DACS / Universal USB to I2S Interface Indicator

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so, 😉

as i´ve bought some “new” speaker (Mission Cyrus 780 (one bass driver was defect, had to order some spare from the UK)), i´ve had to re-adjust/re-set/re-listen to my hifi in general..

I´ve just bought some AMD Ryzen on some Asus-Board too and so i could test the nowadays “onboard-sound-solutions” (in this case some Realtek S1220A with 120db SNR) against some “normal CD-transporter” or some Raspberry PI 4 over USB->I2S to some ES9038Q2M..

Absolutely still no comparison !! ->we forget these onboard-sound now and go directly to the USB->XMOS-USB-Bridge->I2S->ES9038Q2M vs. Raspberry Pi -> XMOS USB-Bridge->I2S->ES9038Q2M thing..

First thought (over PC->XMOS-USB->I2S->ES9038Q2M) these ESSabre-engineers “add/or re-invented” some really funny/sunny/airy components to the digital stream..absolutely lovely, much “more voluminous”, airier..(these advanced-bitstream-thing))

But after connected to the Raspberry Pi 4 via USB(3.0)->XMOS-USB-Bridge->I2S->ES9038Q2M its still an enermous “lap ahead”, guess its absolutely because of the short electronical circuits on the Pi (less latencies) and the less EMI-interferences on some PI-boards against the “noise” on some normal PC-mainboards..

So its again some “normal” CD-transporter (over spdif to some dac/ES9038xx) vs. Pi-4 (for saved media-content)..

Updated my volumio-software on the Pi-4 (now at V2.851), absolutely great, super fast “scrolling” through the libraries (more CPU-power Pi-4)..

->https://volumio.org/get-started/

So conclusion for now (again):->forget the soundcard/USB-thing from the PC/MAC->its still about “normal” CD-transporter vs Raspberry Pi ->USB-bridge->ES9038xxx..

I´ve also bought some Synology DS214Play now->absolutely great, no lags/problems now, absolutely smooth..

by that i´ve found right now by chance these “Arduino-based Universal USB to I2S Interface Indicator” by dimdim.gr; its here->http://www.dimdim.gr/arduino/universal-usb-to-i2s-interface-indicator/ (+ there are a lot of very interesting infos about sabre+akm-boards in general on this site !!)

thats exactly for what i searched soo long !! (.ino is here->LINK)

also found some new ES9038Pro-DACS on massdrop for example->will post then more about it..

greets for now !! 😉